If you travel a lot, and are less concerned with security than you are with convenience, the Timbuk2 Command will serve your needs. It doesn’t have the security features of the other bags, but if you are going to be going in and out of the airport, this will save you some hassle. It is large enough for your laptop and is TSA compliant so you don’t have to take it out while going through security. It is a Timbuk2, so it has all the compartments and neat features you come to expect. If you travel for business a lot and carry your laptop, this is your best messenger bag for travel during business.